Method, electronic device, and program product for disk mapping

An electronic device, comprising:

• a processor;
• and
• a memory, the memory being coupled to the processor and storing instructions, wherein the instructions, when executed by the processor, cause the device to perform the following actions:
• dividing a plurality of disks into a plurality of groups based on the number and type of the plurality of disks;
• dividing the plurality of groups into a set of available groups and a set of unavailable groups based on the type of a target redundant array of independent disks (RAID), wherein an available group represents that disk units in the available group are able to form the target RAID, and an unavailable group represents that disk units in the unavailable group are unable to form the target RAID;
• and
• enabling, by mapping one or more disk units in one or more available groups of the set of available groups into the set of unavailable groups, one or more unavailable groups of the set of unavailable groups to form the target RAID.

A computer program product, the computer program product being tangibly stored on a non-transitory computer-readable storage medium and comprising computer-executable instructions, wherein the computer-executable instructions, when executed, cause a computer to perform the following operations:

• dividing a plurality of disks into a plurality of groups based on the number and type of the plurality of disks;
• dividing the plurality of groups into a set of available groups and a set of unavailable groups based on the type of a target redundant array of independent disks (RAID), wherein an available group represents that disk units in the available group are able to form the target RAID, and an unavailable group represents that disk units in the unavailable group are unable to form the target RAID;
• and
• enabling, by mapping one or more disk units in one or more available groups of the set of available groups into the set of unavailable groups, one or more unavailable groups of the set of unavailable groups to form the target RAID.